2. Now, download and install KB4013214. You can download this update from Windows Update.

3. Upgrade to Creators Update through Windows Update.

Here’s how Microsoft describes this whole process:

As part of Microsoft’s continuing commitment to your privacy with Windows 10, Windows Update KB4013214 prepares your device for the Windows 10 Creators Update by installing the Upgrade and Privacy Experience (UPX).

This update is required before Windows Update will download and install the Windows 10 Creators Update.

To install this update, you must have installed cumulative update KB4015217, or a subsequently released Windows 10 cumulative update. Note: KB4013214 is required before Windows Update will download and install the Windows 10 Creators Update.

There you go, if you’ve been experiencing various upgrade issues and errors, verify if KB4015217 and KB4013214 are installed on your computer. If these two updates are missing, this may explain why you haven’t been able to upgrade.

If you still can’t upgrade to Windows 10 Creators Update even after installing these two updates, try using the ISO files.